The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom @ Vol. III, p. 522; Vol. VIII, pp. 518- 522; Vol. XIV, p. 468
The cited information was published by Gloucester, England: Sutton Publishing Ltd., 2000 (Ref: Vol. III, p. 522; Vol. VIII, pp. 518- 522; Vol. XIV, p. 468) The author/originator was G. E. Cokayne.